Insulating device



FIG. 1 is a front view of an insulating device showing our new design;

FIG. 2 is a side view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view.

The zig-zag broken lines represent zipper teeth and form no part of the claimed design. The broken lines immediately adjacent to the shaded area define the bounds of the claimed design and form no part thereof. The broken lines depicting the remainder of the insulating device form no part of the claimed design. 

CLAIM The ornamental design for an insulating device, as shown and described. 